Data integrity protection methods and apparatus

By implementing integrity protection at session or flow granularity in the LTE system and using different integrity protection algorithms and keys, the problem of inflexible integrity protection in the LTE system is solved, meeting the security requirements of different services and improving data efficiency. Security.

Active Publication Date: 2021-07-09
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the granularity of the integrity protection function in the LTE system is at the terminal device level, that is, the terminal device uses the same integrity protection parameters for all data, making the integrity protection inflexible

Method used

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Examples

Experimental program
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Embodiment Construction

[0125] The present application provides a data integrity protection method, which can be applied to various communication systems, and the communication system can be Universal Mobile Telecommunications System (Universal Mobile Telecommunications System, UMTS), Code Division Multiple Access (Code Division Multiple Access, CDMA) system , Wideband Code Division Multiple Access (WCDMA) system, Wireless Local Area Network (WLAN), Long Term Evolution (LTE) system or fifth-generation mobile communication (5th-Generation, 5G) system.

[0126] figure 1 A schematic architecture diagram of an application scenario of the present application is shown. Such as figure 1 As shown, the 5G system may include: (wireless) access network ((Radio) Access Network, (R)AN), core network (Core Network, CN) and terminal equipment. Among them, RAN is responsible for the access of terminal equipment. The coverage of RAN includes multiple terminal equipment. The interface between RAN and CN is NG inter...

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Abstract

This application provides a data integrity protection method and apparatus. The terminal device obtains the integrity protection algorithm and key corresponding to the session and the DRB corresponding to the session, and uses the integrity protection algorithm and key corresponding to the session to perform integrity protection on the data in the DRB corresponding to the session. Alternatively, the terminal device obtains the integrity protection algorithm and key corresponding to the stream and the DRB corresponding to the stream, and uses the integrity protection algorithm and key corresponding to the stream to perform integrity protection on the data in the DRB corresponding to the stream. A session includes multiple streams, and different sessions can use different integrity protection algorithms and keys. Different streams can also use different integrity protection algorithms and keys, thereby making integrity protection more flexible and meeting the security needs of different services of the same user.

Description

Technical Field [0001] This application relates to communication technology, and more particularly to a method and apparatus for data integrity protection. Background Technology [0002] With the rapid development of communication technology, the information security of mobile communication systems has received increasing attention. Taking the Long Term Evolution (LTE) system as an example, the purpose of the Integrity Protection function in the LTE system is to prevent user data from being tampered with. Once the receiving end detects that the integrity verification has failed, it can trigger the encryption and decryption key update process and use the new key to protect the user data. [0003] Integrity protection functionality includes integrity protection and integrity verification. In LTE, integrity protection resides at the Packet Data Convergence Protocol (PDCP) layer. Before encryption, the sender performs integrity protection on the header and data portion of the PDC...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): H04L29/06
CPCH04L63/0428H04L63/123H04W12/04H04W12/106H04W8/14H04W12/102
OwnerHUAWEI TECH CO LTD